Company lists · Data refreshed August 2026

Top 25 Commercial litigation law firms based in Canada

Name: Commercial litigation law firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 2,308 companies tracked

RevenueBase identified 2,308 commercial litigation law firms headquartered in Canada as of August 2026 and tracks 42,560 professional contacts across them, including 26,047 with verified work emails and 2,728 with mobile numbers. Toronto is the largest hub.

This list covers commercial litigation law firms headquartered in Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed August 31, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

2,308Companies

42,560Contacts tracked

26,047Verified emails

2,728Mobile numbers

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The 25 largest commercial litigation law firms based in Canada

Ranked by team size

Top 25 of 2,308 commercial litigation law firms based in Canada, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to commercial litigation law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Fasken	Partial evidence	Calgary, AB, Canada	1,001-5,000	2,259 contacts →
	Partial evidence “About Fasken Fasken is a leading international law firm with more than 900 lawyers and ten offices on three continents.” Source: RevenueBase Database · checked Aug 31, 2026
2	Mccarthy Tétrault	Indirect evidence	Calgary, AB, Canada	1,001-5,000	1,901 contacts →
	Indirect evidence “McCarthy Tétrault provides a broad range of legal services, advising on large and complex assignments for Canadian and international interests.” Source: RevenueBase Database · checked Aug 31, 2026
3	Osler, Hoskin & Harcourt LLP	Partial evidence	Toronto, ON, Canada	1,001-5,000	1,561 contacts →
	Partial evidence “Osler is a leading business law firm uniquely positioned to advise Canadian, U.S.” Source: RevenueBase Database · checked Aug 31, 2026
4	Blake, Cassels & Graydon LLP	Indirect evidence	Vancouver, BC, Canada	1,001-5,000	1,552 contacts →
	Indirect evidence “At Blake, Cassels & Graydon LLP (Blakes), we serve a diverse national and international client base.” Source: RevenueBase Database · checked Aug 31, 2026
5	Miller Thomson LLP	Partial evidence	Calgary, AB, Canada	1,001-5,000	1,401 contacts →
	Partial evidence “Miller Thomson LLP ("Miller Thomson") is a national business law firm with approximately 500 lawyers across five provinces in Canada, the broadest reach of any Canadian law firm.” Source: RevenueBase Database · checked Aug 31, 2026
6	Bennett Jones	Partial evidence	Ottawa, ON, Canada	501-1,000	1,134 contacts →
	Partial evidence “For over a century, Bennett Jones has been an internationally recognized Canadian law firm founded and focused on principles of professional excellence, integrity, respect and…” Source: RevenueBase Database · checked Aug 31, 2026
7	Torys LLP	Indirect evidence	Calgary, AB, Canada	501-1,000	971 contacts →
	Indirect evidence “At Torys, we are in the constant pursuit of earning and building the trust of our clients through superior results and novel solutions.” Source: RevenueBase Database · checked Aug 31, 2026
8	Cassels Brock & Blackwell LLP	Partial evidence	Toronto, ON, Canada	501-1,000	810 contacts →
	Partial evidence “Cassels Brock & Blackwell LLP is a Canadian law firm focused on serving the transaction, advocacy, and advisory needs of the country’s most dynamic business sectors.” Source: RevenueBase Database · checked Aug 31, 2026
9	BCF	Partial evidence	Quebec, QC, Canada	501-1,000	715 contacts →
	Partial evidence “With over 500 employees and 300 professionals, BCF Business Law is the go-to firm for business leaders, growing companies, and well-established global enterprises who have chosen…” Source: RevenueBase Database · checked Aug 31, 2026
10	Stewart Mckelvey	Partial evidence	Fredericton, NB, Canada	201-500	594 contacts →
	Partial evidence “Stewart McKelvey is a full-service, Canadian law firm with more than 250 lawyers across six offices in Atlantic Canada.” Source: RevenueBase Database · checked Aug 31, 2026
11	Aird & Berlis LLP	Indirect evidence	Toronto, ON, Canada	501-1,000	572 contacts →
	Indirect evidence “Whether you are conducting business in Canada or abroad, Aird & Berlis LLP understands the realities of your work.” Source: RevenueBase Database · checked Aug 31, 2026
12	Lavery	Partial evidence	Trois-Rivieres, QC, Canada	201-500	543 contacts →
	Partial evidence “Over a century of legal advice to domestic and international organizations has made Lavery Lawyers the leading independent law firm in Quebec (Canadian Lawyer).” Source: RevenueBase Database · checked Aug 31, 2026
13	Smart & Biggar	Indirect evidence	Ottawa, ON, Canada	501-1,000	517 contacts →
	Indirect evidence “Smart & Biggar is widely recognized as Canada’s leading firm for intellectual property, and with over 180 lawyers, patent agents and trademark agents.” Source: RevenueBase Database · checked Aug 31, 2026
14	Goodmans LLP	Partial evidence	Toronto, ON, Canada	201-500	494 contacts →
	Partial evidence “Goodmans LLP is recognized internationally as one of Canada's premier transaction law firms because our lawyers and clients are industry leaders.” Source: RevenueBase Database · checked Aug 31, 2026
15	Lerners LLP	Partial evidence	Kitchener, ON, Canada	201-500	447 contacts →
	Partial evidence “Lerners LLP is a full service law firm that has grown to become one of Ontario’s largest firms.” Source: RevenueBase Database · checked Aug 31, 2026
16	Langlois Avocats	Partial evidence	Montreal, QC, Canada	201-500	347 contacts →
	Partial evidence “As a leading independent law firm in Québec, Langlois brings together more than 325 people, including some 185 legal professionals, in our Montréal and Québec City offices.” Source: RevenueBase Database · checked Aug 31, 2026
17	Blaney Mcmurtry LLP	Partial evidence	Toronto, ON, Canada	201-500	298 contacts →
	Partial evidence “Based in the heart of Toronto’s financial district, Blaney McMurtry LLP is one of Canada's premier law firms.” Source: RevenueBase Database · checked Aug 31, 2026
18	Weirfoulds LLP	Indirect evidence	Toronto, ON, Canada	201-500	282 contacts →
	Indirect evidence “For over 165 years, the lawyers of WeirFoulds have been proud to serve our clients in their most difficult and complex matters.” Source: RevenueBase Database · checked Aug 31, 2026
19	Burnet, Duckworth & Palmer LLP	Indirect evidence	Calgary, AB, Canada	201-500	271 contacts →
	Indirect evidence “The world is changing, and it’s happening faster than ever.” Source: RevenueBase Database · checked Aug 31, 2026
20	Fogler, Rubinoff LLP	Indirect evidence	Toronto, ON, Canada	51-200	238 contacts →
	Indirect evidence “We bring together the knowledge, experience and energy of the whole firm to help our clients.” Source: RevenueBase Database · checked Aug 31, 2026
21	Farris LLP	Partial evidence	Victoria, BC, Canada	201-500	231 contacts →
	Partial evidence “Farris is a high performance law firm, with a diverse client base ranging from individuals to some of the largest public institutions and private corporations in British Columbia…” Source: RevenueBase Database · checked Aug 31, 2026
22	Clark Wilson LLP	Indirect evidence	Vancouver, BC, Canada	201-500	224 contacts →
	Indirect evidence “We are a multifaceted firm with a strong track record of being highly integrated into our clients’ businesses.” Source: RevenueBase Database · checked Aug 31, 2026
23	Loopstra Nixon LLP	Indirect evidence	Toronto, ON, Canada	201-500	218 contacts →
	Indirect evidence “Welcome to Loopstra Nixon.” Source: RevenueBase Database · checked Aug 31, 2026
24	Lenczner Slaght	Partial evidence	Toronto, ON, Canada	51-200	214 contacts →
	Partial evidence “Widely recognized as Canada’s leading litigation practice, we have successfully represented clients’ interests in some of the most complex, high-profile cases in Canadian legal…” Source: RevenueBase Database · checked Aug 31, 2026
25	Gardiner Roberts LLP	Partial evidence	Toronto, ON, Canada	51-200	204 contacts →
	Partial evidence “Founded in the 1920s, Gardiner Roberts LLP (GR) is a full-service law firm advising clients ranging from leading global enterprises through to small and medium-sized companies…” Source: RevenueBase Database · checked Aug 31, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: commercial litigation law firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names commercial litigation law firms.
Partial evidence: Its own public description names part of commercial litigation law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial litigation law firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,308 commercial litigation law firms based in Canada

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Commercial litigation law firms based in Canada at a glance

As of Aug 31, 2026

61.2%Verified-email coverage

6.4%Mobile-number coverage

18.4Average contacts per company

1-10Median size (employees)

25.3%Largest-city concentration · Toronto

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

1,419

11-50

666

51-200

147

201-500

501-1,000

1,001-5,000

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among commercial litigation law firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Canada whose own description of what they do matches “commercial litigation law firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names commercial litigation law firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among commercial litigation law firms, and records with no verified work email. Companies headquartered outside Canada are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 26,047 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on August 31, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Commercial litigation law firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names commercial litigation law firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many commercial litigation law firms are there based in Canada?

RevenueBase identified 2,308 commercial litigation law firms headquartered in Canada as of August 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Fasken, headquartered in Calgary, tops this list with the largest team on record.

Which city has the most commercial litigation law firms?

Toronto leads with 584 headquartered companies, followed by Montreal (186) and Vancouver (184).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 26,047 verified decision-maker contacts tracked across these 2,308 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.